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//
// MenuProxy.m
// MacGap
//
// Created by Joe Hildebrand on 1/14/12.
// Copyright (c) 2012 Twitter. All rights reserved.
//
#import <objc/runtime.h>
#import <JavaScriptCore/JavaScript.h>
#import "MenuProxy.h"
#import "MenuItemProxy.h"
static char REPRESENTED_OBJECT;
@interface NSMenu (represented)
@property (strong) id representedObject;
@end
@implementation NSMenu (represented)
- (id) representedObject
{
return objc_getAssociatedObject(self, &REPRESENTED_OBJECT);
}
- (void) setRepresentedObject:(id)representedObject
{
objc_setAssociatedObject(self,
&REPRESENTED_OBJECT,
representedObject,
OBJC_ASSOCIATION_RETAIN);
}
@end
@implementation MenuProxy
- (id) initWithContext:(JSContextRef)aContext andMenu:(NSMenu*)aMenu
{
self = [super initWithContext:aContext];
if (!self)
return nil;
menu = aMenu;
menu.representedObject = self;
return self;
}
+ (MenuProxy*)proxyWithContext:(JSContextRef)aContext andMenu:(NSMenu*)aMenu
{
// singleton-ish.
MenuProxy *ret = [aMenu representedObject];
if (ret)
{
NSLog(@"MP cache hit");
return ret;
}
return [[MenuProxy alloc] initWithContext:aContext andMenu:aMenu];
}
- (void) dealloc
{
menu.representedObject = nil;
}
- (NSString*) description
{
return [menu description];
}
static BOOL isNullish(id o)
{
if (!o)
return YES;
if ([o isKindOfClass:[WebUndefined class]])
return YES;
return NO;
}
- (MenuItemProxy*)addItemWithTitle:(NSString*)title
keyEquivalent:(NSString*)keyCommand
callback:(WebScriptObject*)aCallback
atIndex:(NSInteger)index
{
if (isNullish(title))
title = @"";
NSString *aKey = [MenuProxy getKeyFromString:keyCommand];
NSMenuItem *item = nil;
if(index) {
item = [menu insertItemWithTitle:title action:nil keyEquivalent:aKey atIndex:index ];
} else {
item = [menu addItemWithTitle:title action:nil keyEquivalent:aKey ];
}
// Set the modifiers.
NSUInteger modifiers = [MenuProxy getModifiersFromString:keyCommand];
[item setKeyEquivalentModifierMask:modifiers];
if(!menu.supermenu) {
NSMenu *s = [[NSMenu alloc] initWithTitle:title];
[item setSubmenu:s];
}
MenuItemProxy *mip = [MenuItemProxy proxyWithContext:context andMenuItem:item];
if (!isNullish(aCallback))
[mip setCallback:aCallback];
return mip;
}
+ (NSString*)getKeyFromString:(NSString*)keyCommand {
if (isNullish(keyCommand))
keyCommand = @"";
// Obtain the key (if there are modifiers, it will be the last character).
NSString *aKey = @"";
if ([keyCommand length] > 0) {
aKey = [keyCommand substringFromIndex:[keyCommand length] - 1];
}
return aKey;
}
+ (NSUInteger*)getModifiersFromString:(NSString*)keyCommand {
// aKeys may optionally specify one or more modifiers.
NSUInteger modifiers = 0;
if ([keyCommand rangeOfString:@"caps"].location != NSNotFound) modifiers += NSAlphaShiftKeyMask;
if ([keyCommand rangeOfString:@"shift"].location != NSNotFound) modifiers += NSShiftKeyMask;
if ([keyCommand rangeOfString:@"cmd"].location != NSNotFound) modifiers += NSCommandKeyMask;
if ([keyCommand rangeOfString:@"ctrl"].location != NSNotFound) modifiers += NSControlKeyMask;
if ([keyCommand rangeOfString:@"opt"].location != NSNotFound) modifiers += NSAlternateKeyMask;
if ([keyCommand rangeOfString:@"alt"].location != NSNotFound) modifiers += NSAlternateKeyMask;
return modifiers;
}
- (MenuItemProxy*)addSeparator
{
NSMenuItem *sep = [NSMenuItem separatorItem];
[menu addItem:sep];
return [MenuItemProxy proxyWithContext:context andMenuItem:sep];
}
- (MenuItemProxy*)itemForKey:(id)key
{
if (isNullish(key))
return nil;
NSMenuItem *item = nil;
if ([key isKindOfClass:[NSNumber class]])
{
item = [menu itemAtIndex:[key intValue]];
}
else if ([key isKindOfClass:[NSString class]])
{
item = [menu itemWithTitle:key];
if (!item)
{
// Try again, with ... appended. e.g. "Save..."
item = [menu itemWithTitle:
[key stringByAppendingString:@"\u2026"]];
}
}
if (!item)
return nil;
return [MenuItemProxy proxyWithContext:context andMenuItem:item];
}
- (MenuProxy*)removeItem:(id)key
{
if (isNullish(key))
return nil;
NSMenuItem *item = nil;
if ([key isKindOfClass:[NSNumber class]])
{
item = [menu itemAtIndex:[key intValue]];
}
else if ([key isKindOfClass:[NSString class]])
{
item = [menu itemWithTitle:key];
if (!item)
{
// Try again, with ... appended. e.g. "Save..."
item = [menu itemWithTitle:
[key stringByAppendingString:@"\u2026"]];
}
}
if (!item)
return nil;
[menu removeItem:item];
return [MenuProxy proxyWithContext:context andMenu:menu];
}
+ (BOOL) isSelectorExcludedFromWebScript:(SEL)selector
{
return [self webScriptNameForSelector:selector] == nil;
}
+ (BOOL) isKeyExcludedFromWebScript:(const char*)name
{
return YES;
}
+ (NSString*) webScriptNameForSelector:(SEL)selector
{
id result = nil;
if (selector == @selector(addItemWithTitle:keyEquivalent:callback:atIndex:)) {
result = @"addItem";
}
else if (selector == @selector(addSeparator)) {
result = @"addSeparator";
}
else if (selector == @selector(itemForKey:)) {
result = @"getItem";
}
else if (selector == @selector(removeItem:)) {
result = @"removeMenu";
}
return result;
}
@end
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